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Tax & social security calendar

Main filing deadlines published by the firm, each with its source and last verification date. Always check your own situation with your adviser.

January 2026

Tax & social security calendar — January 2026
MonTueWedThuFriSatSun
29 30 31 1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31 VAT return (December monthly / Q4 quarterly) on SIMPL-TVA 1

Deadline details

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